Aguieira in Spain is a surf spot that offers varying conditions throughout the year, with clear seasonal patterns in swell and wind. The best months for surfing are typically during the winter and early spring, when ground swells are dominant and wave heights are more consistent. January and February stand out as prime months, with ground swells occurring over 90% of the time and mean swell sizes around 2.3m and 2.2m respectively. These months provide powerful, clean waves, but wind conditions are less favorable, with bad winds prevailing around 72% of the time. March follows closely, with slightly smaller swells (1.9m) but still strong ground swell dominance (84%). From April onward, the swell quality declines, with increasing wind swells and smaller wave sizes. Summer months (June, July, and August) are the least reliable, with weak swells (0.6m–1.1m), high wind swell influence, and frequent flat spells, particularly in August, which sees only 18% ground swells and 43% no swell days. Wind conditions also worsen in summer, with bad winds occurring 70–80% of the time. The autumn months (September to November) see a gradual return of better conditions, with ground swells increasing and wind behavior improving. October and November are particularly notable, offering a balance of decent swell size (1.0m–1.4m) and better wind conditions (good winds 46–48% of the time). December rounds out the year with solid ground swell consistency (85%) and a mean swell of 1.4m, though wind reliability drops again. For advanced surfers seeking the biggest and cleanest waves, the winter months (January–March) are ideal despite the challenging winds, while autumn (October–November) provides a good compromise with more manageable conditions. Summer should generally be avoided unless surfing smaller, wind-affected waves is acceptable.